OK, so they produced what they believe to be a comedic and insulting attack on American gun owners. I suspect that they would howl about how horribly rude and insulting it would be if someone made a retort about how europeans lack of backbone has allowed them to be over run with immigrants who have thoroughly screwed up their cultures and economies. Or, if the retort was about how weak European countries have twice started wars that required assistance of the USA to end. In any case, there are many possible equally insulting retorts that could be directed toward europeans, but there would be no point in doing so.
An old saying: "Never argue with a fool, as bystanders won't know which is which." So, I'll just let it pass. Besides, they don't sign my checks, so I really don't much give a damn what they think. There are a number of very good reasons why they are over there, and I am over here...that is the way I like it. Please stay there.